On 11 Jan, Jay Bhattacharya of Stanford University (and of the Great Barrington Declaration) wrote that the majority of Indians are already immune and that vaccinating them would be unethical. 
The article he co-authored starts by slightly backtracking from the clickbait title, turning the majority into a minority by stating "a near majority (sic) of the population has developed immunity to the virus." (theprint.in/opinion/majori…)
A near-majority is still an astonishing estimate. The article links to its source: a "supermodel" by India's Council of Scientific and Industrial Research (CSIR) has predicted in Jan. that nearly 900 million (!) Indians "may have already been exposed" to SARS-CoV-2.
If Covid has already washed over India, Battacharya then speculated, vaccination would be wasted on ~half the subjects. Worse, vaccination would expose them to rare side effects making it "unethical to vaccinate them" (unless they were first tested).
Note that the "great harm" warning in the article's clickbait subtitle ended up after several paragraphs to be no more, no less than rare side-effects -- but wait, that's not the main point.
The main point is this:
The main point is this:
India's confirmed cases count was 10 mil. in Jan., when the supermodel assumed that unreported, recovered cases amount to 900 mil.
If we continue to apply this incredible 1:90 ratio to reported cases through Feb., Mar., and Apr., 100% of all Indians would have been infected and India should have reached complete herd immunity by... mid-April, a week ago.
This, of course, flies in the face of the terrible situation in India, a very far cry from the natural immunity hoped for in Battacharya's article.
It also turns the concern about unethical actions on its head as in retrospect, the risk in inadvertently vaccinating already-immune individuals seems to have been much lower than Battachaya speculated, and the risk in delaying action - larger.
Note: for other mentions of the Jan. "Majority"article, see
https://twitter.com/TexasVC/status/1384826192855896065?s=19and
https://twitter.com/NDLoubere/status/1385333940337225728?s=19
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